Methylbutenols

In chemistry, the methylbutenols form a group of structurally isomeric pentenols . The different arrangement results in five constitutional isomers with the empirical formula C ₅ H ₁₀ O. The biogenesis of the isoprenoids is based on these isomers.

Methylbutenols
Surname	2-methylbut-3-en-2-ol	3-methylbut-2-en-1-ol	3-methylbut-3-en-1-ol	(2 Z ) -2-methylbut-2-en-1-ol	(2 E ) -2-methylbut-2-en-1-ol
other names	1,1-dimethylallyl alcohol	Prenol	3-isopentenyl alcohol, isoprenol	Angelica alcohol	Tiglin alcohol
Structural formula
CAS number	115-18-4	556-82-1	763-32-6	19319-26-7	497-02-9
PubChem	8257	11173	12988	5366266	6433417
Molecular formula	C 5 H 10 O
Molar mass	86.13 g mol −1
Physical state	liquid
Brief description	colorless liquid with an alcoholic odor	colorless liquid with a fruity odor	colorless liquid with an alcoholic odor
Melting point	−43 ° C		-20 ° C
boiling point	98 ° C	140 ° C	129 ° C	136-137 ° C	122-127 ° C
solubility		170 g l −1 (20 ° C)	90 g l −1 (20 ° C)
	miscible with water	easily soluble in water	soluble in water
GHS labeling	Caution	Caution	Caution
H and P phrases	225-302-319	226-302-315-319-335	226-318
	no EUH phrases	no EUH phrases	no EUH phrases
	210-223-260 305 + 351 + 338-403 + 235	261-305 + 351 + 338	210-280-305 + 351 + 338-313

Individual evidence

1. ↑ Entry on Methylbutenole. In: Römpp Online . Georg Thieme Verlag, accessed on July 5, 2014.
2. ↑ ^{a b c d e} Entry for CAS no. 115-18-4 in the GESTIS substance database of the IFA , accessed on July 5, 2014(JavaScript required) .
3. ↑ ^{a b c d e} Entry for CAS no. 556-82-1 in the GESTIS substance database of the IFA , accessed on July 5, 2014(JavaScript required) .
4. ↑ ^{a b c d e f} Entry for CAS no. 763-32-6 in the GESTIS substance database of the IFA , accessed on July 5, 2014(JavaScript required) .
5. ↑ Dictionary of Food Compounds , p. 880 ( limited preview in Google book search).
6. ↑ Dictionary of Food Compounds , p. 880 ( limited preview in Google book search).